Hydraulic apparatus.



G. G. EARL & c. A. BROWN.

HYDRAULIC APPARATUS. APPLICATION FILED JULY 5.1916.

Patented May 28,1918.

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II r/ l G. G. EARL & C. A. BROWN.

HYDRAULIC APPARATUS. APPLICATION FILED JULY 5|1916.

1,267,522. Patented May 28,1918.

3 SHEETS-SHEET 2- .200 A jga7/ I A 225 Toma; BY ZiZAAQ/bM I W A TTORNEG. G. EARL & C A. BROWN.

HYDRAULIC APPARATUS.

APPLICATION FILED JULY 5,1916.

Patented May 28,1918.

3 SHEETSSHEET 3.

UNITED STATES PATENT OFFICE.

GEORGE GOODELL EARL, OF NEW ORLEANS, LOUISIANA, AND CHARLES ARTHURBROWN, OF LORAIN, OHIO, ASSIGNORS WOOD, OF NEW ORLEANS, LOUISIANA.

OF ONE-THIRD TO ALBERT BALDWIN HYDRAULIC APPARATUS.

Original application filed January 13, 1913, Serial No. 741,637.

To all whom it may concern:

I Be it known that we, GEORGE G. EARL, a cltizen of the United States,residing at New Orleans, in the parish of Orleans and State ofLouisiana, and CHARLES A. BROWN, a citizen of the United States,residing at Lorain, in the county of Lorain and State of Ohio, haveinvented certain new and useful Improvements in Hydraulic Apparatus; andwe do hereby declare the following to be a full, clear, and exactdescription of the invent-ion, such as will enable others skilled in theart to which it appertains to make and use the same.

This application is a division of our application S. X. H1537, filedJan. 13, 1913.

The object of our invention disclosed in this application is to providemeans for integrating and recording fluid flows in such a manner as toindicate at any time the quantity of fluid which has flowed past a givenpoint during a given time. Ve also aim to indicate the rate of flow atany particular time. lVe also aim to provide apparatus which willaccomplish these objects and which can be placed at any desiredlocation, simply and cheaply, and without the use of complicated means.

Other objects of our invention and the invention itself will probably bebetter understood from a detailed description of embodiments of theinvention.

Figure 1 is a section through one form of meter and an embodiment of ourinvention.

Fig. 2 is an elevation of a modification of the embodiment shown in Fig.1.

Fig. 3 is an elevation of the meter.

Fig.3 shows the member 210 in another position.

Fig. L is an end elevation of the meter shown in Fig. 3, showing an endelevation of means which may be employed to operate the member 210through the meter.

Fig. 5 is an enlarged view of a chart made upon the drum shown in Fig.4.

Figs. 6 and 7 are views of a modification showing the form of camillustrated in Fig. 9.

Fig. 8 is a view of a chart which is to be made by the modificationshown in Figs. 6 and 7.

Fig. 9 illustrates one form of apparatus Specification of LettersPatent.

Patented May 28, 1918.

Divided and this application filed July 5,

Serial No. 107,524.

for creating a functional flow which may be employed to operate theapparatus shown in any of the embodiments of the invention illustrated.

Referring now to the drawings and to the embodiments illustratedtherein, at 200 is shown a meter of any suitable form, here illustratedas a disk meter. The meter itself constitutes no part of our invention,and any suitable form for measuring fluid may be used. Fluid enters at51 and passes through the meter, operating the disk 300, and out at 51.The meter actuates, through a suitable train of gears, shown at 201, anelectric contact- 202 which moves over a plurality of stationaryelectric contacts 203 mounted upon a base 204;. These cont-acts areconnected to a conductor 205 which is connected through a source 216with an electro-responsive device 207, which may be used to bring aboutany desired mechanical operation. The other terminal of the device 207is grounded, through a conductor 208, to the frame 208 of the apparatuswhich is called, for convenience, a periodicimeter.

It will be seen that for every unit or fixed quantity of flow throughthe meter, the contact 202 will be caused to engage one of the contacts203 which are equidistant apart, thereby closing the circuit andoperating the device 207. A support 210 is also rotated by the shaft 211and this support. may be provided with a cam-shaped groove. This form ofthe apparatus, however, is illustrated more in detail in Figs. 2 and 8.

In Fig. 2 a disk is shown at 210 which is rotated through a shaft 2&0 bya meter, such as shown at 300. The disk 210 is provided with a. cam,here shown as a groove 212. In the embodiment illustrated. in Figs. 2, 3and 4 this groove is a spiral whose ends 212 and 212 are connected by astraight slot 241. A marker. such as a pen 223, is controlled by thiscam. In the form illustrated the pen is connected to rod 213, bearing apin 21% which operates in the slot 212. Bearings. iliustrated at 215..may be provided for the rod 213. The device 223 operates to make arecord upon a sheet 224, which is mounted upon a drum 243 rotatedpreferably at a uniform velocity. Means are provided for returning theapparatus to the initial point when a cycle has been completed. This ishere shown as a weight 242 connected to a cord 244 which passes over apulley 245 and is connected to one end of the rod 213. Thus, when thepin 214 reaches the end 212 of the cam, the slot 241 will be horizontaland through the action or the weight 242 the apparatus will be returnedto normal with the pin 214 in the end 212 of the spiral groove.

Tn addition to the operation of the device 223, we provide means foroperating an electro-responsive device 220, which may be anelectrica-lly-operated pen operating on a sheet carried by a constantlyrotating drum, such as shown at 224. In the form shown in Fig. 2 the rod213 is provided with a pair of contacts 219 which are connected by anelectric conductor. The device 220 is connected in a circuit 222, whichincludes a source of current 246 and a pair of terminals 221. Througheach cycle of the device, the contacts 221 will be bridged by thecontacts 219 and the inter-connecting member, here shown as a portionofthe rod 247.

In Fig. 4 we have illustrated in detail means for communicating motionfrom the meter to the member 210' comprising a shaft 240 and a pair ofbevel gears 248, one of which is mounted on the shaft 240 and the otherupon a shaft 249. lln the embodiment shown in Fig. 4 the rod 213 worksvertically and the weight 242 is mounted directly on the rod. Of course,the rod may be heavy enough to return to normal with out the addition ofa weight.

An enlarged view of the chart with the record upon the same is shown inFig. 5. The chart shows two parallel lines, 250 and 251, which will bespoken of as abscissas, here shown parallel to the upper and lower edgesof the chart itself. The abscissas are divided into equal spaces 252 byordinates 253, which, in the form shown, are drawn perpendicularly to thabscissas. The spaces 252 indicate equal periods of time. The ordinatesare divided up to indicate equal quantities of flow past a given point,such as through the meter. These divisions are preferably decimal partsof the space between the abscissas.

Whenthe device is in operation, the pen will start from the abscissa 250in a curve whose inclination to either of the ordinates will varyaccording to the rate of flow, and will continue to the abscissa 251,arriving there only after a definite amount of fluid has passed themeter. It will then return instantaneously on a straight line parallelto the ordinate back to the abcissa 250 and will begin another curve asbefore. These curves are shown at 260, 260,, 260 and 260 It may be notedthat the portion of the menses curve 260,, shown at 260 parallel to theabscissa indicates no flow in the period of time between the point a andthe point 6. The quantity of fluid which has flowed through the meterbetween any two points of time y be found by counting the units on theordinates through which the pen has passed during such time. The rate offlow at any time may be determined by taking the tangent to the curve atthat point of time, which is found upon the abscissa. It will thus beseen that both the quantity of fluid which has passed the meter and therate of flow at any time may be determined without. removing the chartfrom the apparatus, or disturbing the operation of the apparatus.

In the embodiment shown in Figs. 6 to 8 we have employed a double spiralor heart-shaped cam, such as is illustrated at 270 in Fig. 9. This camis preferably made in the shape of a groove in the disk 210 and operatesthe pen 223 through the bevels 248 and the shafts 240 and 249. Tn thisembodiment the pen will not be returned on a straight line to theabscissa from which it started, but will immediately, upon touching oneof the abscissas, start a new curve on the back motion. lnstead ofmaking what might be termed in general an N- shaped line, as in Fig. 5,it will make a W- shaped line, as illustrated in Fig. 8, each or" thestrokes being a curve of one form or another. Each full up stroke ordown stroke indicates a definite amount of flow, and each fraction ofsuch stroke indicates that fraction of that amount of flow.

llt will be understood that the meter may be either connected to themain flow or to a flow which is functional to the main flow. In Fig. .9we have shown diagrammatically apparatus for creating a functional flow.The conduit through which the main flow passes is shown at 1. Means areprovided for causing the fluid to flow through 1, such as a pump 40. Themain flow passes through a venturi 52 at the. throat 53 of which a duct54 is connected and leads to a fluid chamber 57. A second duct 60connected to said chamber leads to the full section of the conduit 1 at61. At 80 is shown diagrammatically an orifice in the duct 60 forregulating the proportion of the flow therethrough. The meter 200 isshown connected in the duct 51 which is connected to the chamber 57. At63 is shown a valve which controls the flow of fluid through the duct51. The valve is connected by a stem 64 to a diaphragm 55 in the chamber57, dividing the same into cells 59 and 58, the ducts 51 and 60communicating with the cell 58 and the duct. 54 with the cell 59. Theduct 51 in the form shown leads through other apparatus, which isindicated on the drawing and discharges into the tank 108.

The apparatus illustrated in Fig. 9 will operate, in the manner setforth in the parent application, to create in the duct 51 a flow offluid proportional to the flow through the conduit 1. The flow throughthe duct 51 will operate the meter 200, which through the cam 270 on thedisk 210 will actuate the pen 223 to make the curves upon the chart 224,which is mounted upon the drum 243 operated by the clock work 280, inthe manner which has been described in detail, especially in connectionwith Figs. 6 to 8 inclusive.

While we have shown spiral cams, it will be understood that we may useany convenient means for converting the rotary motion of the meter intothe rectilinear motion of the pen. We have shown in Figs. 5 to 8 chartsemploying rectilinear coordinates, though we may use any suitablecoordinates Without departing from the scope of our invention. We mayalso employ any suitable means for driving the drum, and any suitablepen or pencil. While we have shown a drum, it will be understood that wemay employ any suitable means for moving the chart before the pen orpencil.

We have, in fact, shown these particular details and these particularembodiments for the purpose of better illustrating our invention, andnot that we desire to be limited to such details and embodiments. Manydepartures may be made from both the details and embodiments shownwithout departing from the spirit of the invention.

We claim 1. In fluid measuring a paratus, the combination of a chartprovi ed with two lines parallel to each other, means to move saidchart, a duct through which fluid flows and means to move said chartpast the point of I said pen at a constant velocity and means controlledby the flow of fluidin the duct to move said pen across said chart fromone of said lines to the other in straight line motion and to reversethemovement of said pen when a definite amount of fluid has flowed pasta point in said conduit.

In witness whereof, we have hereunto affixed our signatures this 3rd dayof June,

GEORGE GOODELL EARL. CHARLES ARTHUR BROWN.

